Sewing-machine



(MOdBL) h D. L. KEELER.

SEWING MACHINE. No. 3-s4;442. Patented Jan. 19, 1886. 5

\F i w (9 BY my Hid/ u? 'tion is applied.

UNITED STATES PATENT OFFICE.

DAVID L. KEELER, OF GRAND RAPIDS, MICHIGAN.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 334,442, dated January 19, 1886.

Application filed November 11,1884. Serial No. 147,664. (Model) 7 To all whom it may concern:

Be it known that I, DAVID L. KEELER, a citizen of the United States, residing at the city of Grand Rapids, in the county of Kent and State of Michigan, have inverted certain new and useful Improvements inSewing-Machines, of which the following is a specifica tion.

My invention relates to that part of a sewing-machine which feeds or moves the fabric to the needle; and the object of my invention is to regulate the length of the stitch by means of an adjustable incline or wedge, as hereinafter fully described. I attain this object by means of the mechanism illustrated in the accompanying drawings, in which Figure 1 is a perspective view of an incline washer used upon the eccentric-rod. Fig. 2 is a plan view of the under side of the bedplate of a sewing-machine to which my inven- Fig. 3 is a side view of the adjusting-bar 0, showing its connection to the bed-plate. Fig. 4 is a perspective view of the bar 0, and Fig. 5 a plan view of a modified form of a portion of the feeding device shown in Fig. 2.

Similar letters refer to similar parts throughout the several views.

E is the bed-plate of a machine as seen from the under side.

J is the shaft, to which is rigidly attached the eccentric H, which eccentric gives the longitudinal motion to the eccentric-rod G.

F is the feed-bar, bent at one end, as shown, and provided with an opening, through which the bolt A passes, so as to allow the feed-bar to move freely upon the bolt. The bolt A is provided with a head, as shown in the drawings, and the lower end of A terminates in a screw, which engages with a screw-thread cut in an opening in the eccentric-rod G.

Between the head of bolt A. and incline or wedge O is the washer B, one side resting against the head of A and the other side inclined, as shown, so as to fit against the wedge 0.

Between the washer B and the feed-bar F is the wedge O, which is provided with the slot 1?, for the reception of the neck of bolt A. The wedge O is or may be formed in one and the same piece with the regulating-bar O, as shown.

bar 0. It has a tongue or slide rigidly attached, which fits into and slides in the slot D in the plate.

N is a screw, which holds the washer in place and supports one end of the bar 0. It

L is a washer between the plate E and the passes through the hole M of the bar 0, and

also through the washer L, and extends beyond a sufficient distance to allow the adj ustingnut K to be attached thereto.

Q is a set-screw for adjusting bolt A to any required position. The spring S operates merely to hold the feed-bar against the feed-bar cam to keep it from rattling. The machine works equally Well without it, except that without this spring the machine makes more noise in running.

Instead of using the beveled washer B, it may be dispensed with, as shown in Fig. 5, in which case the washer may be dispensed with entirely, or a thin metallic or leather washer used instead; and instead of having the bolt A adjustable, as above described, it may be rigid with the eccentric-rod G, as also shown in Fig. 5.

The eccentrics H and cam I are the same as those in ordinary use in sewing-machines.

The operation of my invention is as follows: To shorten the stitch, the nut K is loosened and the bar 0 moved in the direction indicated by the arrow. This pushes back the incline O. The shaft J is then revolved, and the eccentric H brings the head of A near to the feed-bar F before acting upon it, so that as the eccentric revolves thelongitudinal movement of the feed-bar F will be very slight. By loosening nut K and moving the bar 0 in the direction opposite to the one above described incline O is drawn between the head of A and i'eed-bir F, and by again setting the shaft J in motion the feed-bar F is moved longitudinally to the full extent of the eccentric, giving a very long stitch. It will be seen that by the means above described the length of the stitch may be readily adjusted to any desired length between the maximum and minimum points, which adjustment can be made with great facility and accuracy.

Having thus described my invention, what I claim to have invented, and desire to secure by Letters Patent, is-- 1. In asewing-machine, the combination of the feed-bar F with the eeeentrierod G, bolt 2;. The combination of the feed-bar F, eccen- A, and incline 0, said incline being adjnstw I trio-rod G, and bolt A, said bolt A being adble, so as to shorten or lengthen the stroke or justable longitudinally in the eccentric-rod,

movement of the feed-bar, thereby regulating l substantially as and for the purpose described.

the length of the stitch, substantially as de- 4. The combination of the following parts,

scribed. viz: shaft J, eccentric H, rod G, feed-bar F, 2. The combination of the incline O, the inadjustable bolt A, and incline O, substantially eline-washer B, the bolt A, eccentric-rod G, as and for the purpose described.

and feed-bar F, said incline 0 being adjusta- I DAVID L. KEELER.

ble longitudinally between the end of feed \Vitnesses:

bar F and the head of bolt A, substantially as EDWARD TAGGART,

described. FRED \V. STEYENS. 

